From patchwork Fri Feb 17 18:18:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13145135 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 22E89C05027 for ; Fri, 17 Feb 2023 18:19:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229682AbjBQSTm (ORCPT ); Fri, 17 Feb 2023 13:19:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229679AbjBQSTl (ORCPT ); Fri, 17 Feb 2023 13:19:41 -0500 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B7015EC8B for ; Fri, 17 Feb 2023 10:19:36 -0800 (PST) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4PJKmT4Dqxz6J9Kp; Sat, 18 Feb 2023 02:17:45 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.17; Fri, 17 Feb 2023 18:19:34 +0000 From: Jonathan Cameron To: , Michael Tsirkin CC: Ben Widawsky , , , Ira Weiny , Gregory Price , =?utf-8?q?Philippe_Mathieu-Daud?= =?utf-8?q?=C3=A9?= , Mike Maslenkin , Markus Armbruster , Dave Jiang , Subject: [PATCH 3/6] hw/cxl: Introduce cxl_device_get_timestamp() utility function Date: Fri, 17 Feb 2023 18:18:09 +0000 Message-ID: <20230217181812.26995-4-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230217181812.26995-1-Jonathan.Cameron@huawei.com> References: <20230217181812.26995-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100004.china.huawei.com (7.191.162.219) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-cxl@vger.kernel.org From: Ira Weiny There are new users of this functionality coming shortly so factor it out from the GET_TIMESTAMP mailbox command handling. Signed-off-by: Ira Weiny Signed-off-by: Jonathan Cameron --- hw/cxl/cxl-device-utils.c | 15 +++++++++++++++ hw/cxl/cxl-mailbox-utils.c | 11 +---------- include/hw/cxl/cxl_device.h | 2 ++ 3 files changed, 18 insertions(+), 10 deletions(-) diff --git a/hw/cxl/cxl-device-utils.c b/hw/cxl/cxl-device-utils.c index 4c5e88aaf5..86e1cea8ce 100644 --- a/hw/cxl/cxl-device-utils.c +++ b/hw/cxl/cxl-device-utils.c @@ -269,3 +269,18 @@ void cxl_device_register_init_common(CXLDeviceState *cxl_dstate) cxl_initialize_mailbox(cxl_dstate); } + +uint64_t cxl_device_get_timestamp(CXLDeviceState *cxl_dstate) +{ + uint64_t time, delta; + uint64_t final_time = 0; + + if (cxl_dstate->timestamp.set) { + /* Find the delta from the last time the host set the time. */ + time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); + delta = time - cxl_dstate->timestamp.last_set; + final_time = cxl_dstate->timestamp.host_set + delta; + } + + return final_time; +} diff --git a/hw/cxl/cxl-mailbox-utils.c b/hw/cxl/cxl-mailbox-utils.c index 67aca3fd6c..580366ed2f 100644 --- a/hw/cxl/cxl-mailbox-utils.c +++ b/hw/cxl/cxl-mailbox-utils.c @@ -135,17 +135,8 @@ static CXLRetCode cmd_timestamp_get(struct cxl_cmd *cmd, CXLDeviceState *cxl_dstate, uint16_t *len) { - uint64_t time, delta; - uint64_t final_time = 0; - - if (cxl_dstate->timestamp.set) { - /* First find the delta from the last time the host set the time. */ - time = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL); - delta = time - cxl_dstate->timestamp.last_set; - final_time = cxl_dstate->timestamp.host_set + delta; - } + uint64_t final_time = cxl_device_get_timestamp(cxl_dstate); - /* Then adjust the actual time */ stq_le_p(cmd->payload, final_time); *len = 8; diff --git a/include/hw/cxl/cxl_device.h b/include/hw/cxl/cxl_device.h index b737c3699f..44fea2d649 100644 --- a/include/hw/cxl/cxl_device.h +++ b/include/hw/cxl/cxl_device.h @@ -315,4 +315,6 @@ MemTxResult cxl_type3_read(PCIDevice *d, hwaddr host_addr, uint64_t *data, MemTxResult cxl_type3_write(PCIDevice *d, hwaddr host_addr, uint64_t data, unsigned size, MemTxAttrs attrs); +uint64_t cxl_device_get_timestamp(CXLDeviceState *cxlds); + #endif